The tags capture and record information on an individual’s location at all times. After receiving location signals from satellites, the tag then communicates location data via a mobile phone network then through to a case management system.

New offences of stalking (in addition to existing offences of harassment) were introduced in 2012. The offences are harassment which involves a course of conduct that amounts to stalking. There are two offences, stalking involving fear of violence and stalking involving serious alarm or distress.